HD64F7050 RENESAS [Renesas Technology Corp], HD64F7050 Datasheet - Page 595

• Manufacturer Part Number: HD64F7050
• Description: 32-Bit RISC Microcomputer SuperH RISC engine Family/
• Manufacturer: RENESAS [Renesas Technology Corp]

18.11.4 Auto-Program Mode
1. In auto-program mode, 128 bytes are programmed simultaneously. This should be carried out
2. A 128-byte data transfer is necessary even when programming fewer than 128 bytes. In this
3. The lower 7 bits of the transfer address must be low. If a value other than an effective address
4. Memory address transfer is performed in the third cycle (figure 18.13). Do not perform transfer
5. Do not perform a command write during a programming operation.
6. Perform one auto-program operation for a 128-byte block for each address. Two or more
7. Confirm normal end of auto-programming by checking D6. Alternatively, status read mode
8. Status polling D6 and D7 pin information is retained until the next command write. As long as
I/O7–I/O0
by executing 128 consecutive byte transfers.
case, H'FF data must be written to the extra addresses.
is input, processing will switch to a memory write operation but a write error will be flagged.
after the second cycle.
additional programming operations cannot be performed on a previously programmed address
block.
can also be used for this purpose (D7 status polling uses the auto-program operation end
identification pin).
the next command write has not been performed, reading is possible by enabling CE and OE.
A16–A0
WE
OE
CE
Figure 18.17 CE
V
IH
Address stable
t
acc
CE
CE and OE
CE
t
ce
t
oe
OE
OE Clock System Read Timing Waveforms
OE
t
oh
t
df
Rev. 5.00 Jan 06, 2006 page 575 of 818
Address stable
t
acc
Section 18 ROM (128 kB Version)
t
ce
t
oe
REJ09B0273-0500
t
oh
t
df